package com.cheyun.netsalev3.utils;


import android.content.Context;
import android.graphics.Rect;
import android.view.View;

import androidx.recyclerview.widget.RecyclerView;

public class SpaceItemDecoration extends RecyclerView.ItemDecoration {

    private int hSpace;
    private int vSpace;
    private int column;

    public SpaceItemDecoration(Context context, int hSpace, int vSpace, int column) {
        if (hSpace > 0) {
            this.hSpace = FunctionUtils.dip2px(context, hSpace);
        }
        if (vSpace > 0) {
            this.vSpace = FunctionUtils.dip2px(context, vSpace);
        }
        this.column = column;
    }

    @Override
    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
        //不是第一个的格子都设一个左边和底部的间距
        outRect.left = hSpace;
        outRect.bottom = vSpace;
        //由于每行都只有3个，所以第一个都是3的倍数，把左边距设为0
        if (parent.getChildLayoutPosition(view) % column == 0) {
            outRect.left = 0;
        }
    }
}
